Supercharger Discussion Forum
#25
PM'd email. For belt slip, really depends on how you're tensioning the belt. Are you using an autotensioner of some sort (preferably the GM-style high-torque ones), at least a 6 rib belt, and getting at least 180 degrees of wrap around the pulley? I haven't seen pics of your setup. I never had any issues with belt slip whatsoever and I was pushing 21psi at redline at the end on the 1.6L whipple/lysholm (making a fair bit more power than my dyno above, but never took it to the dyno to get actual numbers, just kept timing the same on E85 and got the fueling right -- what could go wrong!?)
#26
PM'd email. For belt slip, really depends on how you're tensioning the belt. Are you using an autotensioner of some sort (preferably the GM-style high-torque ones), at least a 6 rib belt, and getting at least 180 degrees of wrap around the pulley? I haven't seen pics of your setup. I never had any issues with belt slip whatsoever and I was pushing 21psi at redline at the end on the 1.6L whipple/lysholm (making a fair bit more power than my dyno above, but never took it to the dyno to get actual numbers, just kept timing the same on E85 and got the fueling right -- what could go wrong!?)
#27
I'll repeat what I emailed you on here for others to see -- an autotensioner is huge with a supercharger. With the amount of torque that the SC is eating, it stretches the belt way beyond what you'd think is possible. My autotensioner moves through a couple inches of range during a dyno pull. When sitting at rest, you can barely deflect the belt by hand it's so tensioned. To then watch it move multiple inches under load is mindboggling.
#29
So I wrote up a huge response going into detail of everything but when I went to post it, it disappeared :(
In short:
Thanks for the discussion it was exactly what I was looking for it's given me idea's ill research into.
The linear powerband looks more appealing to me as the mountain roads in my area are very tight and technical so having a turbo up there is just always sideways (that is the reason I sold the skyline) I plan on keeping the miata resonably dailyable and reliable and keeping the bottom end stock, for now atleast. The end game is just how much I can get out of the Stock bottom end which I *believe* is 200-250hp. So considering the above should I go with the C30-74 or C30-94? (I want the Kraftwerks kit) I will be keeping the car N/A for as long as possible getting ready for boost, so it'll be running E85, cams, standalone ECU (Haltech or Adaptronic) and the other basic goodies.
In short:
Thanks for the discussion it was exactly what I was looking for it's given me idea's ill research into.
The linear powerband looks more appealing to me as the mountain roads in my area are very tight and technical so having a turbo up there is just always sideways (that is the reason I sold the skyline) I plan on keeping the miata resonably dailyable and reliable and keeping the bottom end stock, for now atleast. The end game is just how much I can get out of the Stock bottom end which I *believe* is 200-250hp. So considering the above should I go with the C30-74 or C30-94? (I want the Kraftwerks kit) I will be keeping the car N/A for as long as possible getting ready for boost, so it'll be running E85, cams, standalone ECU (Haltech or Adaptronic) and the other basic goodies.
#31
Yeah I don't plan to put the supercharger on for a while, this is all probably a year or so away so I can hold-off, what will be better about the Jackson Racing and TDR kit? Kraftwerks kit has been around for a while now and is proven to work?
#32
Jackson racing has been co-developing their kit with Emilio (949 racing) on this forum so you know it will work as intended under hard use without any problems or needed modifications.
#36
I'm torn between this debate as well. At least I have a year to figure it out when my built engine will finally be ready. By then the jackson Racing SC kits should be on the road and hopefully the trackspeed efr and more of the fab9 efr kits as well.
I really should have just went K24 rather than building a BP but oh well.
I really should have just went K24 rather than building a BP but oh well.
#38
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Never gonna happen.
But I'll race you however you want to race (don't race dyno plots anyway). 1/8th, 1/4, 40-140 roll, autocross, time attack....you pick.....just bring a pocket full of money
But I'll race you however you want to race (don't race dyno plots anyway). 1/8th, 1/4, 40-140 roll, autocross, time attack....you pick.....just bring a pocket full of money